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设计一套测量大气风场的多普勒激光雷达系统,以种子注入的单频、高重频、脉冲紫外全固态激光器为发射光源,采用两种直接探测技术获取高低空大气风场。基于费索干涉仪(Fizeau)的条纹图像技术获取边界层和低对流层大气风场,基于双法布里珀罗干涉仪(DFP)的双边缘检测技术获取高对流层和低平流层风场。研制的单频全固态激光器输出100 Hz、30 mJ的单纵模脉冲激光,输出线宽达到傅里叶转换极限。报道了测量原理和数值模拟结果、实验样机和系统技术参数。系统将用于移动式高低空大气风场测量。
A Doppler lidar system for measuring atmospheric wind field is designed. Single-frequency, high-frequency, pulsed UV all-solid-state laser with seed injection is used as the light source. Two types of direct detection technologies are used to obtain the wind field at high and low levels. Based on the Fizeau fringe image technique, the atmospheric wind fields of the boundary layer and the low troposphere are obtained. The double-edge detection technique based on double Fabry-Perot Interferometer (DFP) is used to obtain the wind field of the high troposphere and the low stratosphere. The developed single-frequency all-solid-state laser outputs a single longitudinal mode pulse laser of 100 Hz and 30 mJ, and the output linewidth reaches the Fourier transform limit. Reported the measurement principle and numerical simulation results, experimental prototype and system technical parameters. The system will be used for mobile altitude air field measurement.